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Number of solution(s) satisfying the equation `1/(sinx)-1/(sin2x)=2/(sin4x)` in `[0,4pi]` equals 0 (b) 2 (c) 4 (d) 6

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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
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  2. prove that 1/(secA-tanA)-1/(cosA)=1/(cosA)-1/(secA+tanA)

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  16. 3(sintheta-costheta)^4+6(sintheta+costheta)^2+4(sin^6theta+cos^6theta)...

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  20. If theta1 and theta2 are two values lying in [0,2pi] for which t a n...

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